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GPT-5.2 Pro

Available

An OpenAI model with a 400K-token context window, image input and tool calling. On the OpenAI API since December 11, 2025.

Access details: OpenAI API

An alias. The provider can point it at a newer version.

gpt-5.2-pro
Updated Sep 23, 2026

Capabilities & limits

Context window
400K
Maximum output
128K
Image input
Supported
Tool calling
Supported
Structured output
Unsupported

Pricing

USD / 1M tokens
Input
$21.00
Output
$168.00

Standard rates per million tokens. Discounts and long-context rates, where offered, are on OpenAI's pricing page.

Full rate card 2 rates

All prices in USD.

Standard input

$21.00 per 1M tokens

Standard output

$168.00 per 1M tokens

Other tiers per 1M tokens (short context): Batch: $10.5 input / $84 output. No cached-input discount.

Price history
Sep 23, 2026

Input $21.00 per million tokens

Sep 23, 2026

Output $168.00 per million tokens

Technical details

Parameters
Not published
Active parameters
Not published
Architecture
Not published
Training / knowledge cutoff
Aug 31, 2025
Input modalities
Text, image
Output modalities
Text

Release & lifecycle

First available
Dec 11, 2025
available
As of Sep 23, 2026

Considering a switch?

Specs only go so far. Try both on your own tasks and compare quality, speed and cost.

Compare with Claude Fable 5.1 →

Prices and availability as of October 20, 2026. OpenAI's own pages have the latest.